Respuesta :
Tasting it and touching it are both potentially dangerous for a start haha. SO DONT DO THOSE ONES.
Litmus paper is a good choice because its colour changes based on the presence of an acid or base.
Phenolphthalein is an acid-base indicator and does a similar thing to litmus.
Litmus paper and phenolphthalein are the right choices
Litmus paper is a good choice because its colour changes based on the presence of an acid or base.
Phenolphthalein is an acid-base indicator and does a similar thing to litmus.
Litmus paper and phenolphthalein are the right choices
Answer : The correct options are, litmus paper and phenolphthalein.
Explanation :
Acid : It is a substance that has ability of donating proton or hydrogen ion, [tex]H^+[/tex].
The properties of an acid are :
Acids are sour in taste.
The texture of an acid solution is sticky.
It changes the color of the litmus paper to red.
Base : It is a substance that has ability of donating hydroxide ion, [tex]OH^-[/tex].
The properties of an base are :
Base are bitter in taste.
The texture of an base solution is slippery.
It changes the color of the litmus paper to blue.
Indicators : It is a substance that gives the visible sign by the color change of the chemical species like an acid or a base.
Litmus paper : It turns red when it is added to a strong acid, it turns blue or purple when it is added to a strong base and it turns a yellowish-green when it is added to a neutral solution.
Phenolphthalein : It is also used as an indicator in acid–base titrations. It turns colorless in acidic solutions and pink in basic solutions.
Thus, there are two good ways to test whether a solution is an acid or a base which are litmus paper and phenolphthalein.